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Liaoning Hongyu refractory Group Co., Ltd.

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What are the advantages of refractory bricks and insulation materials in modern vertical kilns?

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What are the advantages of refractory bricks and insulation materials in modern vertical kilns?

Date:2018-05-03 Author: Click:

The output of shaft kiln cement accounts for 70% of China's cement output, and the magnesia carbon brick listed company is one of the large energy consuming industrial kilns in China's building materials industry. The energy consumption is high, the output is low, and the quality is not stable. Therefore, improving the quality and production and reducing the energy consumption is an important way to improve the economic benefit of the cement enterprise of the vertical kiln, and the energy saving is particularly important. With the rapid development of the cement industry in the past ten years, the project from the original mechanized vertical kiln to the modern machine shaft kiln has increased gradually, and the requirements for the refractory and the insulation material are becoming higher and higher.

Magnesia carbon brick listed company


In the past, the specifications of the conventional mechanized vertical kiln were 32 x 11.5m, and the refractory bricks were high aluminum phosphate combined with non burning bricks. The thermal insulation materials used blast furnace granulated slag. The effect was not ideal, and there were many disadvantages. First, the service life of the refractory brick was short, the refractory degree was low, and the bell mouthpiece was replaced in August in the peak season of cement. Bricks can only be used for 6 months, and the kiln lining bricks are corroded into convex concave surfaces. There are frequent occurrence of calcining and firing caves at the center and side of the sinter clinker, which have seriously damaged the thermal system of the kiln surface and caused the problems of low production and poor quality, and the safety production is threatened. Energy consumption is increased. Due to poor heat insulation, a lot of heat energy is transmitted to the kiln, the thermal conductivity is about 0.8~1.0W/ (M. K), and the coal consumption of clinker is increased to 1250~1300 card / kilogram clinker, and the output of the platform is only between 13 and 13.5? T/h. Because of low output, the electricity consumption also increases to 65kW h/ tonnes of clinker. The waste phenomenon is very astonishing, which seriously affects the development of the enterprises, and there is no competitive ability in the market, and even can not survive.

Application of energy-saving refractories in modern vertical kiln

  In order to improve the economic efficiency of the enterprises and improve the technology, quality and output of shaft kilns, the ordinary shaft kiln has been reformed. The core of the transformation is to replace the refractory bricks, strengthen the heat preservation of the kiln body, to refit the horn of the kiln and to adjust the height of the horn, to change the iron brick from the plane iron liner to the broken guide brick, to replace the new type of material and the energy saving type discharge tower grate, to improve the service life of the kiln lining brick and the heat preservation effect of the kiln, so as to save energy and achieve energy saving. The goal of high yield and high quality.